Multiwall carbon nanotubes decorated with FeCr2O4, a new selective electrochemical sensor for amoxicillin determination

Direct writing aims to deposit materials onto substrates in localised positions. In this paper, we demonstrate a new method for direct writing of nanoparticles at ambient-air-pressure. An electrical discharge is used to generate gold nanoparticles of the order of 10?nm diameter, which are then transported and ??focused?? by an electric field in air, through the process of electric field-assisted diffusion, as opposed to normal ballistic focusing since the mean free path in air is very short. This process is novel and allows for practical normal atmospheric-pressure focused deposition of nanoparticles. The focusing mechanism is capable of producing patterned arrays of deposited nanoparticles with widths that are less than 10?% of the diameter of the focusing apparatus; in the present experimental configuration, gold spots with diameters of a few tens of micrometres were achieved, with ultimate size being limited by transverse diffusion and by charged particle mutual repulsion. In this study, the process of generating nanoparticles from bulk material, transporting and focusing these particles takes place in one operation, which is a key advantage in rapid prototyping and manufacturing techniques.     

Activation cross sections for some isotopes of Ti and Mo with 14.7 MeV neutrons

The (n,p) and (n,2n) reaction cross sections on natural Ti and Mo targets have been measured forE _n =14.73±0.05 MeV neutrons using the activation technique. The induced gamma-ray activities of the irradiated samples and their monitor foils were measured by using an HPGe detector. The cross sections were compared with previous results. The experimental uncertainties are between 3% and 8% in most cases.     

Some comments on the original Kaluza-Klein theory

In this note the basis of the Kaluza-Klein theory is examined critically and it is pointed out that the five-dimensional version can’t work in the way that was originally intended. The reason why the problem was not noted originally is elucidated.     

Enhanced the performance of zinc strontium sulfide-based supercapattery device with the polyaniline doped activated carbon

Journal of Solid State Electrochemistry - A hybrid supercapacitor, also known as a supercapattery, combines the high power density of supercapacitors with the high energy density of batteries. In...